Does Newtons 3rd law corespond with pressure?

In summary, Newton's 3rd Law states that for every action, there is an equal and opposite reaction. This applies to pressure as well, as pressure is created when a force is applied to a surface and the surface pushes back with an equal force. Newton's 3rd Law explains how pressure is created and is directly related to the magnitude of the force applied. In real-life scenarios, this law can be seen in actions such as sitting in a chair or driving a car. Pressure cannot be created without following Newton's 3rd Law, as every action must have an equal and opposite reaction.
  • #1
zeromodz
246
0
If I were to take a standard sharp led pencil and push it on my desk, the tip of pencil will feel the same force as the force exerted on the desk, but what about the pressure?

Since pressure is defined as:

P = F / A

The surface area of the tip of the sharp pencil is far smaller than the surface area of the desk, so does that mean that the pressures will be different? Or are they the same due to a resultant pressure?


Thanks.
 
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  • #2
Only contact surface counts, and it is identical for both objects.
 

Related to Does Newtons 3rd law corespond with pressure?

1. Does Newton's 3rd Law apply to pressure?

Yes, Newton's 3rd Law states that for every action, there is an equal and opposite reaction. This applies to pressure as well, as pressure is created when a force is applied to a surface and the surface pushes back with an equal force.

2. How does Newton's 3rd Law relate to pressure?

Newton's 3rd Law explains that when a force is applied, there will be an equal and opposite force in the opposite direction. In the case of pressure, when a force is applied to a surface, the surface will push back with an equal force, creating pressure.

3. Can pressure be created without following Newton's 3rd Law?

No, according to Newton's 3rd Law, every action has an equal and opposite reaction. Therefore, in order for pressure to be created, there must be a force applied to a surface and the surface must push back with an equal force.

4. Does the magnitude of the pressure depend on the force applied?

Yes, according to Newton's 3rd Law, the magnitude of the pressure is directly proportional to the force applied. The greater the force applied, the greater the pressure will be.

5. How is Newton's 3rd Law applied in real-life scenarios involving pressure?

Newton's 3rd Law can be seen in various real-life scenarios involving pressure, such as when a person sits on a chair, the chair exerts an equal and opposite force on the person, creating pressure. It can also be seen when a car drives on a road, the tires push down on the road with a force, and the road pushes back with an equal force, creating pressure.

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